C Programming - MCQ Practice Questions

What happens when you declare a variable without initializing it?

Which of the following correctly demonstrates pointer arithmetic?

What is the output of the following code? int a = 5; int *p = &a; int q = &p; printf("%d", q);

Which data type is most suitable for storing a decimal number with high precision?

What is the range of values for a signed char in C?

Which keyword is used to modify a variable so that it cannot be changed?

In C, which storage class has the longest scope and lifetime?

What is the size of the double data type in most 64-bit systems?

Which of the following variable names is INVALID in C?

What will be the result of sizeof(int) on a typical 32-bit system?

Which storage class variable is automatically initialized to 0 if not explicitly initialized?

Consider: long long int x; What is the minimum guaranteed size of x according to C standard?

Which of the following demonstrates proper type casting in C?

What is the difference between 'signed' and 'unsigned' char in terms of range?

Which keyword prevents a local variable from being optimized by compiler into a register?

In the declaration 'int *p, q;', what are the data types of p and q?

What happens when you attempt to store a double value in an int variable without explicit casting?

Which of the following is a correct way to declare a constant variable in modern C?

What is the output of: printf("%d", sizeof(char) + sizeof(int) + sizeof(float)); on a typical 32-bit system?

A variable declared with 'register' storage class suggests to the compiler to store it in: